Shedding mechanism for looms



UNITED STATES PATENT Trice.

THOMAS LYNN, OF NORRISTOWN, PENNSYLVANIA.

SHEDDING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 539,693, dated May 21, 1895. Application filed June 4, 1894. Serial No 513,353- (No model.)

To all whom it may concern: 7

Be it known that I, THOMAS LYNN, a citizen of the United States, residing at Norristown, in the county of Montgomery, State of Pennsylvania, have invented a new and useful Improvement in Shedding Mechanisms for Looms, which improvement is fully set forth in the following specification and accompanying drawings.

My invention consists of improvements in shedding mechanism, as will be hereinafter set forth and pointed out in the claims that follow the specification.

Figures 1 and 2 represent side elevations of aharness-motion embodying my invention, the parts being shown in different positions. Fig. 3 represents a section on line a: m, Fig. 2. Fig. 4 represents a view of a detached portion.

Similar letters of reference indicate corresponding parts in the several figures.

Referring to the drawings, Adesignates a pinion which is mounted on the frame A, which is connected with or is part of the frame proper of the loom, and has mounted on its side a stud carrying a block B, which plays in the slot or recess 0 of the arm D of the harness lever D, the latter being pivotally attached to the frame A, and has the harness frame secured to the respective ends thereof.

In the arm D, below the recess 0, is a recess E, which is adapted to receive the said block B, in either of the positions of the pinion A, said arm having also a recess F, which crosses the opposite ends of the recess 0 and recess E, and receives the axial pin G of said pinion, said recess F passing over said pin as the arm D oscillates, due to the action of the block B,-

which is carried to the right and left by the pinion, it being seen that the latter receives reciprocating motions by the operation of the racks G, which mesh with said'pinion and have connected with the same respectively the bars H and J, the latter being adapted to rise and fall without disengaging the racks from the pinion.

On the under side of the bar H is a recess K, and on the upper side of the bar J, is a recess L, either of said recesses being adapted to receive the lifter bar M, which plays in the space N, between said bars H and J, and is guided in a slot P in the frame A, said bar being operated by the crank or crank wheel ceives power fromany suitable member of l the 160m.

On the upper side of the bar H is an inclined finger or lifter R, which is adapted to engage with the roller or abutment S on the frame A, and thuslimit the advance movement of the bar, and also to clear the recess K in the bar-H from engagement with the lifter bar M, the said bar having on its under side the inclined shoulder T, which is adapted to be en gaged by the shoulder U, which rises from the end of the bar J.

V designates the pattern which is adapted to actuate the bar J, whereby the latter will be raised and permitted to drop relatively to the design or pattern of goods to be woven.

The operation is as follows: Referring to Fig. 1, when the riser on the pattern lifts the bar J, the recess L then receives the lifter bar M, and causes said bar J to be engaged by said bar M. The latter new advances and carries the bar J with it, thus rotating the pinion A, and moving the upperend of the lever D to the right, thereby raising the attached harness frame. The shoulder J on the bar J now clears said riser, and the bar J drops to such extent that the recess L leaves the lifter bar M, and the latter then returns, it being clear of the bar J. If a sinker now occurs, both of the bars J, H, drop, and the bar H has its recess K engage with the bar M, which latter advances and carries with it the bar H, and causes the rotation of the pinion in reverse order, whereby the upper end of the lever D is moved to the left thereby lowering the attached harness frame. The fingerR now engages with the roller S and lifts the bar l-l clear of the bar M, whereby the latter is per mitted to return, as again shown in Fig. 1, and so the operations may be repeated. Should however, there be a riser instead of a sinker, as has just been stated, then instead of both bars dropping, said bars will be held up, and the bar M will remain free of both recesses K and L, and work in the space N, without causing a shifting or rotation of the pinion, the harness frame thus remaining at rest or in the position it last occupied.

When' the block B is raised by the pinion, it enters the recess 0, and permits the lever D to be thrown to the right or left, as the ICC case may be, but when said lever has made its throw, the said block enters the recess E, either when the latter is on the right or left of the axis of the pinion and so locks the lever and holds it immovable until the pinion is again properly rotated.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. Ina shedding mechanism, a pivoted lever having recesses therein, said recesses crossing each other, a pinion with an axial pin in one of said recesses, a block eccentrically mounted on said pinion and moving in the other recess, and reciprocating racks for operating said pinion, said parts being combined substantially as described.

2. In a shedding mechanism, a pivoted harness-carrying lever having recesses therein, said recesses crossing each other, an oscillate ing pinion having its axial pin in one of said recesses and an eccentrically mounted block movable in the other, racks engaging said pinions, each of said racks havinga connected bar with a recess therein, a reciprocating bar adapted to engage in either of said recesses for actuating said racks, and means for raising or lowering said recessed bars, said parts being combined substantially as described.

3. A shedding mechanism having a pinion with a block thereon, racks meshing with said pinion, bars carrying said racks, a lifter bar adapted to engage with either of said bars, a lifting finger on the upper bar, a roll or abutment on the frame for engagement of said finger, and a harness-carrying lever having an arm with recesses to receive the aforesaid block, said rack bars'having recesses for the engagement of said lifter bar, and shoulders which engage each other, one of said bars having a shoulder on the side adjacent to the pattern, said parts being combined substantially as described.

4. In a shedding mechanism, a pivoted lever having recesses crossing each other, a pinion suitably journaled and having its axial pin in one of said recesses, a block eccentrically mounted on said pinion, and movable in the other recess, racks engaging said pinion and having bars with recesses therein, a reciprocating bar adapted to be engaged in the recesses of said bars, or to move between the bars, means for raising or lowering said bars, and means for limiting the advance movements of the upper rack, said parts being combined substantially as described.

THOMAS LYNN.

\Vitnesses:

JOHN A. WIEDE sHEIM, A. P. JENNINGS. 

